This about sums it up...

The mid-life crisis is a well-known phenomenon – you turn fifty, buy a motorcycle, and realize you’re closer to death than you are to birth. The quarter-life crisis has been documented more recently – you graduate college, move back in with your parents, and realize you have no marketable skills. (This is also known as being a whiny bitch.) What gets much less exposure is the third-life crisis – when you hit your thirties, start getting invitations to your friends’ baby showers, and realize your job is slowly destroying your soul. In a way, the third-life crisis is most devastating because it occurs when you’re still young enough to do whatever the hell you want, but just old enough that people look down on you for it. After all, a lot is expected of the thirtysomething generation, but many of us seem content to just get really drunk and disappoint everyone.
~Aaron Karo, Ruminations #178